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India: Climate, Natural Vegetation and Wildlife - Questions & Answers

QUESTION TIME

A. Fill in the blanks.
1. The Southeast Trade Winds blow towards the Equator in the Southern Hemisphere.
2. The rainy season in Tamil Nadu comprises the months of October, November and December.
3. The peninsular part of India divides the Monsoon Winds into two branches—the Arabian Sea Branch and the Bay of Bengal Branch.
4. A National Park is a protected environment for birds and animals where fishing and grazing are prohibited.
5. The Nilgiri Biosphere Reserve was the first of its kind to have been established in India.

B. Tick the sentences that are true. Correct the others.
1. The climate of India is broadly classified as the equatorial type.
False. The climate of India is broadly classified as the tropical monsoon type.
2. The Northeast Monsoons in India last from June to September.
False. The Northeast Monsoons in India last from October to mid-December. (The Southwest Monsoons last from June to September).
3. Ladakh receives over 200 cm of annual rainfall.
False. Ladakh receives less than 50 cm of annual rainfall (it is a cold desert region).
4. Lac is derived from the sal tree.
False. Lac is a resin secreted by lac insects (though often found in forests containing trees like palas or kusum, it is not derived directly from the sal tree itself).
5. The Kanha National Park is located in Assam.
False. The Kanha National Park is located in Madhya Pradesh.

C. Multiple choice questions.
1. The Hot Weather Season in India lasts from:
a) March to May
b) February to April
c) March to July
d) April to August
Answer: a) March to May

2. Two places in India that are known to be two of the wettest places on the Earth are:
a) Tamil Nadu and Kerala
b) Leh and Ladakh
c) Mawsynram and Cherrapunji
d) Punjab and Chandigarh
Answer: c) Mawsynram and Cherrapunji

D. Give reasons for the following.
1. The southern half of India experiences lesser variations in temperature than the northern half.
The southern half of India is closer to the Equator (tropical zone) and is surrounded by the sea on three sides (peninsular India). The proximity to the sea creates a moderating influence (land and sea breezes), ensuring the climate remains equable with low diurnal and seasonal ranges of temperature.

2. Local thundershowers in south India are also known as mango showers.
They are known as mango showers because these sudden local rains help in the ripening of mangoes.

3. Kerala receives more than 400 cm of rainfall annually.
Kerala receives very heavy rainfall because it gets rain from both the advancing Southwest Monsoon (Arabian Sea branch) in June and the Retreating Monsoon (Northeast Monsoon) later in the year. Being on the windward side of the Western Ghats also causes heavy orographic rainfall.

4. Planting of trees helps prevent soil erosion.
The roots of trees and plants bind the soil particles together, which prevents the soil from being washed away by water or blown away by wind.

E. Answer in brief.
1. Name the main seasons of India. Over which months do each of them extend?
The four main seasons are:
  • The Summer or Hot Weather Season: mid-March to May
  • The Rainy Season or Southwest Monsoon Season: June to September
  • The Northeast Monsoon Season (Retreating Monsoon): October to mid-December
  • The Winter or Cold Weather Season: mid-December to mid-March

2. Which is the region in India that gets rains during winter? What causes this rain?
The northwestern parts of the Gangetic Plains (Punjab, Haryana) get rain during winter. This is caused by cyclonic depressions known as "western disturbances" that originate in the Mediterranean region. (Note: Coastal Tamil Nadu also receives rain in the cool season, specifically from the Retreating Monsoons in Oct-Dec).

3. Is rainfall distributed evenly across India? Name the places that receive the highest amounts of rainfall, and those that receive close to nothing.
No, rainfall is not distributed evenly.
  • Highest rainfall: The Western Coast (Konkan, Malabar), Western Ghats, Northeast India (Meghalaya, including Cherrapunji and Mawsynram), West Bengal, and Andaman & Nicobar Islands.
  • Lowest rainfall (close to nothing): The Thar Desert (Rajasthan), the Rann of Kachchh (Gujarat), and the Ladakh region.

4. Name three trees that are found in the Himalayas. Also name three animals found in this zone.
Trees: Chir pine, deodar, silver fir (or oak, chestnut, maple).
Animals: Snow leopard, Himalayan musk deer, Himalayan wild yak (or Asian black bear).


5. What is a wildlife sanctuary? How is it different from a national park?
A wildlife sanctuary is a place where hunting and poaching are prohibited, but human activities like fishing and grazing of livestock are allowed on a controlled basis.
A national park is a more strictly protected environment where, apart from hunting and poaching, even fishing and grazing are completely prohibited.


F. Answer in detail.
1. Discuss the factors that affect the climate of India.
The factors affecting India's climate include:
  • Latitude: India spans from tropical (south) to temperate (north) zones, divided by the Tropic of Cancer.
  • Altitude: Temperature decreases with height; hill stations remain cool even in summer.
  • Proximity to the sea: Coastal areas have an equable climate due to land and sea breezes, while interiors have extreme climates.
  • Direction of mountain ranges: The Himalayas block cold Central Asian winds (keeping winters mild) and block Monsoon winds (causing rain).
  • Monsoon Winds: These seasonal winds govern the rainfall and annual seasons of India.

2. Describe the rainy season in India, with special reference to the two branches of the Monsoon Winds and the regions they bring rain to.
The Rainy Season (June to September) begins when moisture-laden Southwest Monsoon winds strike India. They divide into two branches:
  • Arabian Sea Branch: Hits the Western Ghats, bringing heavy rain to Kerala, Karnataka, and Maharashtra (windward side). It then moves to Madhya Pradesh and Gujarat. It brings little rain to Rajasthan as the Aravallis lie parallel to the wind direction.
  • Bay of Bengal Branch: Moves towards the Andaman & Nicobar Islands and Northeast India, causing heavy rain in Meghalaya (Garo, Khasi, Jaintia hills) and West Bengal. It is deflected west by the Himalayas, bringing rain to the Gangetic Plains (Bihar, UP, Punjab).

3. Describe the kind of trees and animals that are found in the following regions of India:
a. tidal forests
b. tropical thorn forests.
a. Tidal (Mangrove) Forests:
  • Trees: Sundari (in Sundarbans), casuarina, goran. They have breathing roots (pneumatophores).
  • Animals: Royal Bengal tiger, estuarine crocodile, spotted deer, fishing cat, olive ridley turtles.
b. Tropical Thorn Forests:
  • Trees: Khajuri (date palm), kikar, khair, babul (acacia). Trees have long roots, thorns, and small leaves.
  • Animals: Camel, Indian wild ass, great Indian bustard, blackbuck, desert snakes/lizards.

4. Write a brief note on the uses of forests.
Forests are valuable resources:
  • Environmental balance: Trees cool the atmosphere, help rainfall occur, and prevent soil erosion by binding soil.
  • Habitat: They provide homes for innumerable species of wildlife.
  • Products: They provide timber (teak, sal, rosewood) for construction and furniture. They yield resins, gums, honey, medicinal herbs, lac, bamboo, and pulp for paper.
  • Soil health: Decayed leaves form humus, enriching the soil.

5. How are forests destroyed? Evaluate the steps that have been taken by the Indian government to prevent their destruction.
Destruction: Forests are destroyed by deforestation for timber, clearing land for agriculture/settlements, and forest fires.
Steps taken by the Government:
  • Afforestation: The Forest Research Institute implements schemes to maintain cover. State departments plant trees to replace felled ones.
  • Vanamahotsava: An annual tree-planting festival in July.
  • Protection: Use of firebreaks and forest wardens to fight fires.
  • Legislation: The Wildlife (Protection) Act of 1972 established National Parks, Wildlife Sanctuaries, and Biosphere Reserves to protect flora and fauna.
  • Special Projects: Projects like Project Tiger were launched to conserve specific endangered species.


ANALYSING AND CRITICAL THINKING
1. The annual rainfall for different places is given below. For each group, pick the correct statement from the brackets. Use your atlas to locate the places.
a) Mangaluru—200 cm; Bengaluru—60 cm; Chennai—30 cm.
This shows that rainfall decreases from (east to west, north to south, south to north or west to east).
Answer: west to east. (Mangaluru is on the west coast, Bengaluru is central/interior, Chennai is on the east coast. Note: Chennai's annual total is usually higher due to retreating monsoons, but based on the provided numbers in the question showing a decline from 200 to 30, the trend implies West to East).

b) Thiruvananthapuram—325 cm; Goa—300 cm; Mumbai—200 cm.
This shows that the rainfall decreases from (east to west, west to east, south to north or north to south).
Answer: south to north. (Thiruvananthapuram is in the far south, Goa is central west coast, Mumbai is further north on the west coast).

c) Kolkata—160 cm; Prayagraj—80 cm; Delhi—65 cm; Jacobabad—10 cm.
This shows that the rainfall decreases from (south to north, west to east, north to south, east to west).
Answer: east to west. (Kolkata is in the east, moving westward through the plains to Prayagraj, Delhi, and beyond).

2. The temperature in °C (T) and rainfall in cm (R) of four metropolitan cities of India are given below. Go through the table carefully and answer the following questions.
(Note: Refer to table in the book for specific data points)

a) For each city, which is the month that is the hottest, the coldest, the driest and the wettest? Calculate the range of temperature.
1. New Delhi:
  • Hottest: June (33.6°C)
  • Coldest: January (13.8°C)
  • Driest: November (0.2 cm)
  • Wettest: August (18.4 cm)
  • Range of Temperature: 33.6 - 13.8 = 19.8°C
2. Mumbai:
  • Hottest: May (30.0°C)
  • Coldest: January/February (24.4°C)
  • Driest: March/April (Assumed 0 or lowest based on typical data, table shows dashes '-' or 0.25 in Jan/Feb)
  • Wettest: July (61.0 cm)
  • Range of Temperature: 30.0 - 24.4 = 5.6°C
3. Kolkata:
  • Hottest: May (30.6°C)
  • Coldest: January (19.4°C)
  • Driest: December (0.4 cm)
  • Wettest: August (32.3 cm)
  • Range of Temperature: 30.6 - 19.4 = 11.2°C
4. Chennai:
  • Hottest: June (32.5°C)
  • Coldest: January (24.5°C)
  • Driest: February/March (0.7 cm)
  • Wettest: November (34.5 cm)
  • Range of Temperature: 32.5 - 24.5 = 8.0°C

b) Why is Chennai's pattern of rainfall different from that of the other cities?
Chennai receives its maximum rainfall in October, November, and December (Retreating Monsoon/Northeast Monsoon season), whereas the other cities (Delhi, Mumbai, Kolkata) receive the majority of their rainfall between June and September from the Southwest Monsoon.

MAP SKILLS
3. The Forest Research Institute is located in:
a) Mussoorie
b) Dehradun
c) Darjeeling
d) Wayanad
Answer: b) Dehradun

4. The Corbett National Park is located in:
a) Madhya Pradesh
b) Uttar Pradesh (Note: It is in Uttarakhand, formerly part of UP. Based on older textbook options, answer is closest to the region or UP if Uttarakhand isn't listed)
c) Assam
d) Rajasthan
Answer: b) Uttar Pradesh (Contextual note: Situated in present-day Uttarakhand)

HANDS-ON!
1. Draw up a list of five animals in India that are endangered.
Examples include: Royal Bengal Tiger, One-horned Rhinoceros, Lion-tailed Macaque, Great Indian Bustard, Snow Leopard.

LOOK AND LEARN
Look at the image and answer the questions.
1. What is this?
This image depicts the Chipko Movement (where people hugged trees to prevent them from being cut down).
2. In which parts of India can this be found?
This movement originated in the Himalayas (specifically the Reni village in Uttarakhand).
3. Name any two products that are produced with the help of this substance.
(Referring to trees/forests): Timber/Wood (for furniture), Resin/Gum, Paper pulp.

LIFE SKILLS AND VALUES
The Chipko movement of the 1970s was a highly effective environmental movement aimed at the conservation of trees and forests... What life skills and values can you learn from the protesters?
We can learn the values of non-violence (ahimsa), courage, collective action/unity, and environmental stewardship (caring for nature for future generations).
Quick Navigation:
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Multiple Choice Questions - Test your understanding with these MCQs. Click "Show Answer" to reveal the correct answer.

Question 1Which specific line of latitude passes through the centre of India, dividing it into two climatic zones?

Correct Answer: The Tropic of Cancer

Question 2What is the broad classification of India's climate?

Correct Answer: Tropical monsoon type

Question 3How does the temperature change with altitude according to the text?

Correct Answer: It falls by 6°C for every 1,000 m of ascent

Question 4Which factor is responsible for the equable climate in coastal areas of India?

Correct Answer: Land and sea breezes

Question 5During the day, in coastal areas, wind blows from:

Correct Answer: Sea to land (Sea breeze)

Question 6Why do the Northern Plains of India experience extreme shifts in temperature?

Correct Answer: They are far from the mitigating influence of the sea

Question 7How do the Himalayas primarily protect India during winter?

Correct Answer: By blocking the cold, continental air masses from Central Asia

Question 8The violent thunderstorms experienced in West Bengal during the summer season are locally known as:

Correct Answer: Kalbaisakhi or Nor'westers

Question 9Hot and dusty winds blowing from the Thar Desert during summer are called:

Correct Answer: Loo

Question 10Why are the pre-monsoon showers in South India called 'Mango Showers'?

Correct Answer: They help in the ripening of mangoes

Question 11Which winds are drawn towards the low-pressure centre over northwest India at the end of May?

Correct Answer: Southeast Trade Winds

Question 12What happens to the Southeast Trade Winds as they cross the Equator?

Correct Answer: They deflect to their right and become Southwest Monsoons

Question 13The sudden and dramatic onset of monsoon rains after a spell of heat is known as:

Correct Answer: The burst of the monsoons

Question 14What is the nature of the Southwest Monsoon rain caused by the relief of the land?

Correct Answer: Orographic

Question 15The Southwest Monsoon splits into which two branches?

Correct Answer: The Arabian Sea Branch and the Bay of Bengal Branch

Question 16Why does the Arabian Sea Branch bring heavy rainfall to the western coast of Maharashtra?

Correct Answer: Because the Western Ghats block the winds, forcing them to rise

Question 17Which region lies on the leeward side of the Western Ghats and receives very little rainfall?

Correct Answer: The interior parts of the southern peninsula

Question 18Why does northwest Rajasthan receive very little rain from the Arabian Sea Branch?

Correct Answer: The Aravalli Range lies parallel to the wind direction and does not obstruct them

Question 19Which hills are responsible for the heavy rainfall in Meghalaya from the Bay of Bengal Branch?

Correct Answer: The Khasi, Garo, and Jaintia Hills

Question 20Which two places in Meghalaya are known as two of the wettest places on Earth?

Correct Answer: Cherrapunji and Mawsynram

Question 21Where do the Arabian Sea Branch and Bay of Bengal Branch of the monsoon eventually merge?

Correct Answer: Over Delhi, Haryana, and Punjab

Question 22What causes the 'Retreating Monsoon' winds to blow from the land to the sea?

Correct Answer: Formation of a high-pressure cell over the cooling landmass

Question 23The Retreating Monsoon winds are also known as:

Correct Answer: Northeast Monsoon Winds

Question 24Which coast receives the majority of its rainfall from the Retreating Monsoons?

Correct Answer: The Coromandel Coast (Tamil Nadu)

Question 25What natural disaster is the Eastern Coastal Plain prone to during the retreating monsoon season?

Correct Answer: Tropical Cyclones

Question 26Which crop in Punjab benefits from the winter rain caused by Western Disturbances?

Correct Answer: Wheat

Question 27Where do the Western Disturbances originate?

Correct Answer: The Mediterranean region

Question 28Which region in India falls under the 'Heavy Rainfall' category (>200 cm)?

Correct Answer: The Western Coast and slopes of Western Ghats

Question 29Which of these regions receives 'Scanty Rainfall' (50 to 100 cm)?

Correct Answer: A large part of the Deccan Plateau

Question 30Which region is classified as 'Desert and Semi-desert' (<50 cm rainfall)?

Correct Answer: Ladakh

Question 31Which harvest festival is celebrated in Kerala?

Correct Answer: Onam

Question 32Which harvest festival is celebrated in Tamil Nadu?

Correct Answer: Pongal

Question 33What are the ideal rainfall conditions for Tropical Evergreen Rainforests?

Correct Answer: More than 200 cm

Question 34Which of the following trees is characteristic of Tropical Evergreen forests?

Correct Answer: Rosewood

Question 35In which region are Tropical Evergreen forests found?

Correct Answer: The Andaman and Nicobar Islands

Question 36What is the leaf-shedding characteristic of trees in Tropical Evergreen forests?

Correct Answer: They do not shed leaves all at the same time, appearing green year-round

Question 37Which animal is commonly found in Tropical Evergreen forests?

Correct Answer: Lion-tailed macaque

Question 38Monsoon forests are also known as:

Correct Answer: Tropical Moist Deciduous Forests

Question 39What is the rainfall range for Monsoon (Deciduous) forests?

Correct Answer: 150-200 cm

Question 40Which important timber tree is found in Tropical Deciduous forests?

Correct Answer: Teak

Question 41Which of these species is NOT found in Tropical Deciduous forests?

Correct Answer: Ebony

Question 42In the Himalayas, what type of vegetation is found between 1,000 m and 2,000 m in the Western part?

Correct Answer: Mixed temperate forests with oak and chestnut

Question 43At what altitude range in the Himalayas are coniferous trees like pine and deodar mainly found?

Correct Answer: 2,000-3,000 m

Question 44What vegetation is found beyond 3,000 m altitude in the Himalayas?

Correct Answer: Mountain grasslands, lichens, and mosses

Question 45Which animal is characteristic of the Mountain forests?

Correct Answer: Snow leopard

Question 46Where are Tropical Thorn Forests typically found?

Correct Answer: Rain shadow regions of the Deccan Plateau and deserts

Question 47Which adaptation is common in the trees of Tropical Thorn Forests?

Correct Answer: Long roots and thorns/spines

Question 48Which tree species is common in Tropical Thorn Forests?

Correct Answer: Babul (Acacia)

Question 49Which animal is found in the Tropical Thorn/Desert vegetation zones?

Correct Answer: Indian wild ass

Question 50Mangrove forests are also known as:

Correct Answer: Tidal forests
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True or False Questions - Determine whether each statement is true or false. Click "Show Answer" to reveal the correct answer.

Statement 1The climate of India is broadly classified as the tropical monsoon type.

Correct Answer: True

Statement 2The Tropic of Cancer divides India into a tropical northern zone and a temperate southern zone.

Correct Answer: False

Statement 3The southern half of India experiences much less seasonal variation in temperature than the northern half.

Correct Answer: True

Statement 4Land heats up slower than the sea during the day.

Correct Answer: False

Statement 5Sea breezes blow from the sea to the land during the day.

Correct Answer: True

Statement 6The Northern Plains experience equable climate due to their distance from the sea.

Correct Answer: False

Statement 7Temperature falls at the rate of 6°C for every 1,000 meters of ascent.

Correct Answer: True

Statement 8Hill stations like Ooty and Shimla remain hot throughout the year.

Correct Answer: False

Statement 9The Himalayas protect India from the cold continental air masses of Central Asia.

Correct Answer: True

Statement 10The Himalayas prevent the Monsoon Winds from drifting beyond India.

Correct Answer: True

Statement 11The Summer Season in India lasts from June to September.

Correct Answer: False

Statement 12A low pressure zone builds up over northwest India during the summer season.

Correct Answer: True

Statement 13Nor'westers or Kalbaisakhi are violent thunderstorms experienced in West Bengal.

Correct Answer: True

Statement 14Mango showers are common in North India during the winter season.

Correct Answer: False

Statement 15The Loo is a hot and dusty wind that blows from the Thar Desert.

Correct Answer: True

Statement 16The Southwest Monsoon winds approach India from the southeast.

Correct Answer: False

Statement 17The sudden onset of monsoon rain is known as the 'burst' of the monsoons.

Correct Answer: True

Statement 18Southwest Monsoon rain is orographic in nature.

Correct Answer: True

Statement 19The Arabian Sea Branch of the monsoon strikes the coast of Kerala around the first week of June.

Correct Answer: True

Statement 20The leeward side of the Western Ghats receives heavy rainfall.

Correct Answer: False

Statement 21The Aravalli Range blocks the Arabian Sea Branch, causing heavy rain in Rajasthan.

Correct Answer: False

Statement 22Cherrapunji and Mawsynram are located in the Khasi Hills.

Correct Answer: True

Statement 23The Bay of Bengal Branch brings heavy rain to Meghalaya, Tripura, and Mizoram.

Correct Answer: True

Statement 24The Retreating Monsoon Season starts in January.

Correct Answer: False

Statement 25During the Retreating Monsoon, winds blow from the land to the sea.

Correct Answer: True

Statement 26The Coromandel Coast receives almost 50% of its annual rainfall from the Northeast Monsoons.

Correct Answer: True

Statement 27Tropical cyclones during the retreating monsoon season cause destruction on the Western Coastal Plain.

Correct Answer: False

Statement 28January is usually the coldest month in India.

Correct Answer: True

Statement 29Western Disturbances originate in the Bay of Bengal.

Correct Answer: False

Statement 30Western Disturbances bring rain essential for wheat crops in Punjab.

Correct Answer: True

Statement 31Regions receiving over 200 cm of rain annually are considered regions of moderate rainfall.

Correct Answer: False

Statement 32The Thar Desert receives less than 50 cm of rainfall in a year.

Correct Answer: True

Statement 33Onam is a harvest festival celebrated in Kerala.

Correct Answer: True

Statement 34Pongal is a harvest festival celebrated in Punjab.

Correct Answer: False

Statement 35Tropical Evergreen Rainforests require rainfall of more than 200 cm a year.

Correct Answer: True

Statement 36Rosewood and Mahogany are trees found in Tropical Evergreen forests.

Correct Answer: True

Statement 37Trees in Tropical Evergreen forests shed their leaves all at the same time.

Correct Answer: False

Statement 38The Lion-tailed macaque is found in Tropical Evergreen Rainforests.

Correct Answer: True

Statement 39Monsoon forests are also known as Tropical Moist Deciduous forests.

Correct Answer: True

Statement 40Teak and Sal are characteristic trees of Tropical Evergreen forests.

Correct Answer: False

Statement 41Sandalwood trees are found in Tropical Moist Deciduous forests.

Correct Answer: True

Statement 42Deciduous trees shed their leaves to conserve water during dry seasons.

Correct Answer: True

Statement 43Mountain vegetation remains the same regardless of altitude.

Correct Answer: False

Statement 44Coniferous trees like pine and deodar are found between 2,000 and 3,000 meters in the Himalayas.

Correct Answer: True

Statement 45The Snow Leopard is found in the Tropical Thorn forests.

Correct Answer: False

Statement 46Tropical Thorn forests are found in areas with less than 25 cm of rainfall.

Correct Answer: True

Statement 47Trees in Thorn forests have short roots and large leaves.

Correct Answer: False

Statement 48Camels and Indian wild asses are found in Desert vegetation zones.

Correct Answer: True

Statement 49Mangrove forests are also known as Tidal forests.

Correct Answer: True

Statement 50Mangrove trees have breathing roots called pneumatophores.

Correct Answer: True
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Fill in the Blanks - Complete the sentences by filling in the missing words. Click "Show Answer" to check your response.

Question 1The climate of India is broadly classified as the ______ type.

Correct Answer: tropical monsoon

Question 2The ______ passes through the centre of India, dividing it into a tropical southern zone and a temperate northern zone.

Correct Answer: Tropic of Cancer

Question 3Temperature falls at the rate of 6°C for every ______ m of ascent.

Correct Answer: 1,000

Question 4Coastal areas experience ______ climate due to the influence of the sea.

Correct Answer: equable

Question 5During the day, winds blowing from the sea to the land are known as ______.

Correct Answer: sea breezes

Question 6At night, winds blowing from the land to the sea are known as ______.

Correct Answer: land breezes

Question 7The Northern Plains experience ______ shifts in temperature because they are far from the sea.

Correct Answer: extreme

Question 8The ______ protect India from the cold, continental air masses of Central Asia.

Correct Answer: Himalayas

Question 9The Himalayas block the ______ winds and prevent them from drifting beyond India.

Correct Answer: Monsoon

Question 10The Summer or Hot Weather Season lasts from mid-March to ______.

Correct Answer: May

Question 11During summer, a low pressure zone builds up over ______ India.

Correct Answer: northwest

Question 12Violent thunderstorms experienced in West Bengal during summer are locally called ______.

Correct Answer: Kalbaisakhi

Question 13Sudden local showers in south India that help ripen mangoes are called ______.

Correct Answer: mango showers

Question 14Hot and dusty winds blowing from the Thar Desert are known as the ______.

Correct Answer: Loo

Question 15The Southwest Monsoon Season lasts from June to ______.

Correct Answer: September

Question 16The Southeast Trade Winds are deflected to their right after crossing the ______.

Correct Answer: Equator

Question 17The dramatic onset of monsoon rains is known as the ______ of the monsoons.

Correct Answer: burst

Question 18Monsoon rain is ______ in nature, meaning it is caused by the relief of the land.

Correct Answer: orographic

Question 19Short dry spells during the monsoon season are known as ______.

Correct Answer: breaks

Question 20The Southwest Monsoon splits into the Arabian Sea branch and the ______ branch.

Correct Answer: Bay of Bengal

Question 21The ______ block the Arabian Sea branch of the monsoon, causing heavy rain on the coast.

Correct Answer: Western Ghats

Question 22The interior parts of the southern peninsula receive little rain because they are on the ______ side of the Western Ghats.

Correct Answer: leeward

Question 23The ______ Range is unable to obstruct the monsoon winds in Rajasthan.

Correct Answer: Aravalli

Question 24Cherrapunji and ______ are two of the wettest places on Earth.

Correct Answer: Mawsynram

Question 25The Bay of Bengal branch is forced to rise by the Khasi, Garo, and ______ Hills.

Correct Answer: Jaintia

Question 26By early July, the monsoon winds reach Delhi and merge with the ______ branch.

Correct Answer: Arabian Sea

Question 27The Retreating Monsoon Season extends from October to mid-______.

Correct Answer: December

Question 28During the retreating monsoon, winds blow from the land to the ______.

Correct Answer: sea

Question 29The retreating monsoon winds are also known as the ______ Monsoons.

Correct Answer: Northeast

Question 30The ______ Coast receives almost 50% of its rainfall during the retreating monsoon season.

Correct Answer: Coromandel

Question 31Low-pressure centres called ______ often grow into tropical cyclones in the Bay of Bengal.

Correct Answer: depressions

Question 32The Cold Weather Season extends over January and ______.

Correct Answer: February

Question 33______ is usually the coldest month in India.

Correct Answer: January

Question 34Winter rain in northwest India is caused by ______.

Correct Answer: western disturbances

Question 35Western disturbances originate in the ______ region.

Correct Answer: Mediterranean

Question 36Winter rain is essential for the cultivation of ______ crops like wheat.

Correct Answer: rabi

Question 37Regions receiving over ______ cm of rain annually are termed regions of heavy rainfall.

Correct Answer: 200

Question 38The Thar Desert receives less than ______ cm of rainfall annually.

Correct Answer: 50

Question 39The harvest festival celebrated in Punjab is ______.

Correct Answer: Baisakhi

Question 40The harvest festival celebrated in Kerala is ______.

Correct Answer: Onam

Question 41The harvest festival celebrated in Tamil Nadu is ______.

Correct Answer: Pongal

Question 42Tropical evergreen rainforests require more than ______ cm of rainfall a year.

Correct Answer: 200

Question 43Rosewood, ebony, and ______ are trees found in tropical evergreen forests.

Correct Answer: mahogany

Question 44The ______ macaque is a wildlife species found in tropical evergreen forests.

Correct Answer: lion-tailed

Question 45Monsoon forests are also called tropical ______ forests.

Correct Answer: deciduous

Question 46Tropical deciduous forests require moderate rainfall between 100 and ______ cm.

Correct Answer: 200

Question 47Teak and ______ are commercially important trees of the deciduous forests.

Correct Answer: sal

Question 48Sandalwood trees are found in tropical ______ forests.

Correct Answer: deciduous

Question 49Mountain forests in the Western Himalayas between 1,000-2,000 m are mixed ______ forests.

Correct Answer: temperate

Question 50Coniferous trees like pine and deodar grow between 2,000 and ______ m in the Himalayas.

Correct Answer: 3,000
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Short Answer Questions - Practice concise answers to these questions. Click "Show Answer" to reveal the response.
Question 1

What is the broad classification of India's climate?

Answer:
Tropical monsoon
Question 2

Which latitude line divides India into tropical and temperate zones?

Answer:
Tropic of Cancer
Question 3

How much does temperature drop for every 1,000 m of ascent?

Answer:
6°C
Question 4

What type of climate do coastal areas in India experience?

Answer:
Equable
Question 5

What wind blows from the sea to the land during the day?

Answer:
Sea breeze
Question 6

What wind blows from the land to the sea at night?

Answer:
Land breeze
Question 7

Which mountain range blocks cold Central Asian winds from entering India?

Answer:
Himalayas
Question 8

Which seasonal winds bring rain to most parts of India?

Answer:
Monsoon winds
Question 9

Which season lasts from mid-March to May in India?

Answer:
Summer
Question 10

What are the hot, dusty winds blowing in the Northern Plains called?

Answer:
Loo
Question 11

What are the violent summer thunderstorms in West Bengal called?

Answer:
Kalbaisakhi
Question 12

What are the pre-monsoon showers in South India called?

Answer:
Mango showers
Question 13

Which trade winds turn into the Southwest Monsoon after crossing the Equator?

Answer:
Southeast Trade Winds
Question 14

What is the sudden onset of monsoon rain called?

Answer:
Burst of monsoon
Question 15

What type of rainfall is caused by the relief of the land?

Answer:
Orographic
Question 16

What are the dry spells during the rainy season called?

Answer:
Breaks
Question 17

Which mountain range blocks the Arabian Sea Branch of the monsoon?

Answer:
Western Ghats
Question 18

Which side of the Western Ghats receives heavy rainfall?

Answer:
Windward side
Question 19

Which range fails to check the monsoon winds in Rajasthan?

Answer:
Aravalli Range
Question 20

Which hills cause heavy rain in Meghalaya?

Answer:
Khasi, Garo, Jaintia
Question 21

Which place in Meghalaya is one of the wettest on Earth?

Answer:
Cherrapunji
Question 22

Where do the Arabian Sea and Bay of Bengal branches merge?

Answer:
Punjab and Haryana
Question 23

What is the season from October to mid-December called?

Answer:
Retreating Monsoon
Question 24

What is the direction of winds during the Retreating Monsoon?

Answer:
Northeast
Question 25

Which coast receives heavy rain from the Northeast Monsoon?

Answer:
Coromandel Coast
Question 26

What weather phenomenon causes destruction on the Eastern Coast in October?

Answer:
Tropical cyclones
Question 27

Which is usually the coldest month in India?

Answer:
January
Question 28

What brings winter rain to the northwestern plains of India?

Answer:
Western Disturbances
Question 29

Which crop benefits from winter rainfall in Punjab?

Answer:
Wheat
Question 30

How much annual rainfall classifies a region as 'heavy rainfall'?

Answer:
Over 200 cm
Question 31

Which region receives less than 50 cm of rain annually?

Answer:
Thar Desert
Question 32

What is the harvest festival of Kerala?

Answer:
Onam
Question 33

What is the harvest festival of Tamil Nadu?

Answer:
Pongal
Question 34

What is the harvest festival of Punjab?

Answer:
Baisakhi
Question 35

What is the harvest festival of Assam?

Answer:
Bihu
Question 36

Which forests require more than 200 cm of rainfall?

Answer:
Tropical evergreen
Question 37

Name a hardwood tree found in tropical evergreen forests.

Answer:
Rosewood
Question 38

Which primate is found in the tropical evergreen forests?

Answer:
Lion-tailed macaque
Question 39

What is another name for Tropical Moist Deciduous forests?

Answer:
Monsoon forests
Question 40

Which commercially important tree is found in deciduous forests?

Answer:
Teak
Question 41

Which scented wood is found in deciduous forests?

Answer:
Sandalwood
Question 42

What do deciduous trees do to save water in dry seasons?

Answer:
Shed leaves
Question 43

What type of trees are found between 1,000 and 2,000 m in the Himalayas?

Answer:
Deciduous/Temperate
Question 44

What type of trees are found between 2,000 and 3,000 m in the Himalayas?

Answer:
Coniferous
Question 45

Name a common coniferous tree.

Answer:
Pine
Question 46

What vegetation is found above 3,000 m altitude?

Answer:
Alpine
Question 47

Which endangered cat is found in the mountain forests?

Answer:
Snow leopard
Question 48

What is the rainfall requirement for Tropical Thorn forests?

Answer:
Less than 25 cm
Question 49

What adaptation do desert tree roots have?

Answer:
Long roots
Question 50

What adaptation do desert tree leaves have?

Answer:
Thorns
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Long Answer Questions - Practice detailed answers to these comprehensive questions. Click "Show Answer" to reveal the response.
Question 1

Discuss the factors that influence the climate of India.

Answer:
The climate of India is influenced by three main factors: Latitude, Proximity to the sea, Altitude, and the direction of mountain ranges. 1. Latitude: India extends from the tropical zone in the south to the temperate zone in the north, with the Tropic of Cancer passing through the center. The northern half experiences distinct seasonal changes, while the southern half remains warm with less variation. 2. Proximity to the sea: Coastal areas have an equable climate due to land and sea breezes, while interior regions like the Northern Plains experience extreme temperatures (hot summers and cold winters) due to their distance from the sea. 3. Altitude: Temperature decreases with height (6°C per 1,000 m). Hill stations like Ooty and Shimla remain cool even in summer. 4. Direction of Mountain Ranges: The Himalayas block cold winds from Central Asia, keeping winters mild, and also trap Monsoon winds to cause rainfall in India.
Question 2

Explain the mechanism of land and sea breezes and how they moderate the climate of coastal areas.

Answer:
Land and sea breezes are periodic winds caused by the differential heating of land and water. During the day, the land heats up faster than the sea, creating low pressure over the land and high pressure over the sea. This causes cool winds to blow from the sea to the land, known as Sea Breezes, which lower daytime temperatures on the coast. At night, the land cools down faster than the sea. High pressure develops over the land and low pressure over the warmer sea, causing winds to blow from the land to the sea, known as Land Breezes. These breezes ensure that coastal areas do not experience extreme temperatures, keeping the climate equable.
Question 3

Describe the characteristics of the Summer or Hot Weather Season in India.

Answer:
The Summer Season in India lasts from mid-March to May. 1. Temperature: As the Sun moves northward, temperatures rise, reaching averages of 35°C in the south and over 45°C in the Northern Plains. 2. Pressure: Intense heating creates a low-pressure zone over northwest India. 3. Local Winds: Hot, dusty winds called 'Loo' blow in the Northern Plains causing dust storms. 4. Local Storms: Violent thunderstorms known as 'Kalbaisakhi' or 'Nor'westers' occur in West Bengal. In the south, pre-monsoon showers called 'Mango Showers' help ripen mangoes.
Question 4

Explain the onset and branching of the Southwest Monsoon winds.

Answer:
By the end of May, a low-pressure trough forms over northwest India, attracting the Southeast Trade Winds from the Southern Hemisphere. As they cross the Equator, they deflect to the right and enter India as the Southwest Monsoon winds. These moisture-laden winds split into two branches: 1. The Arabian Sea Branch: Strikes the Western Ghats in June, bringing heavy rain to the windward side (Kerala, Maharashtra) but leaving the Deccan interior dry (leeward side). It then moves towards Rajasthan but drops little rain there. 2. The Bay of Bengal Branch: Moves towards the Andaman islands and then northwards. Obstructed by the Khasi, Garo, and Jaintia hills, it causes heavy rain in the northeast (e.g., Cherrapunji). The Himalayas deflect these winds westwards up the Gangetic Plain, bringing rain to northern India before merging with the Arabian Sea branch over Punjab.
Question 5

Why does the leeward side of the Western Ghats receive very little rainfall compared to the windward side?

Answer:
The Arabian Sea Branch of the Southwest Monsoon strikes the Western Ghats, which act as a barrier. The moisture-laden winds are forced to rise over the mountains. As they rise, they cool and condense, causing heavy orographic rainfall on the windward slopes (western coast). By the time these winds cross the summit and descend onto the leeward side (the Deccan Plateau), they have lost most of their moisture and become warmer and drier. Consequently, the interior parts of the southern peninsula receive very little rainfall.
Question 6

Describe the Retreating Monsoon Season and its impact on rainfall distribution.

Answer:
The Retreating Monsoon Season occurs from October to mid-December. 1. Cause: As the Sun moves southward, the land cools, creating high pressure over the Indian landmass. Low pressure forms over the warmer oceans. 2. Wind Direction: Winds reverse and blow from the northeast (land) towards the sea. These are called Northeast Monsoon Winds. 3. Rainfall: Generally dry over most of India, these winds pick up moisture while crossing the Bay of Bengal and bring rain to the Coromandel Coast (Tamil Nadu and Puducherry), which receives about 50% of its annual rainfall during this time. 4. Cyclones: Low-pressure depressions in the Bay of Bengal can turn into tropical cyclones, causing destruction along the Eastern Coastal Plain.
Question 7

Explain the phenomenon of 'Western Disturbances' and their significance for agriculture.

Answer:
Western Disturbances are cyclonic depressions that originate in the Mediterranean region. During the Cold Weather Season (January and February), these depressions travel eastwards and reach northwest India. They bring light rainfall to the northwestern parts of the Gangetic Plains and snowfall to the Himalayas. This winter rainfall is highly significant for agriculture as it is essential for the cultivation of 'rabi' (winter) crops, particularly wheat, in states like Punjab and Haryana.
Question 8

Classify the regions of India based on annual rainfall distribution.

Answer:
India is divided into four rainfall regions: 1. Heavy Rainfall (Over 200 cm): Includes the Western Coast, windward slopes of Western Ghats, Northeast India (Meghalaya, Assam, Arunachal Pradesh), and Andaman & Nicobar Islands. 2. Moderate Rainfall (100-200 cm): Includes the leeward side of Western Ghats, Middle Ganga Valley, Odisha, Bihar, and parts of Madhya Pradesh. 3. Scanty Rainfall (50-100 cm): Includes the Upper Ganga Valley, Eastern Rajasthan, Punjab, Haryana, and large parts of the Deccan Plateau. 4. Desert and Semi-desert (Less than 50 cm): Includes the Thar Desert, Western Rajasthan, Gulf of Kachchh, and the Ladakh region.
Question 9

Discuss the impact of Monsoons on the sociocultural unity of India.

Answer:
The Monsoons unify India socially and culturally in several ways: 1. Agriculture: India is largely agrarian, and farming depends heavily on the timely arrival of monsoons. The entire economy fluctuates with the quality of the monsoon. 2. Festivals: Many Indian festivals celebrate the agricultural cycle related to the monsoon. Festivals like Baisakhi (Punjab), Onam (Kerala), Pongal (Tamil Nadu), and Bihu (Assam) revolve around harvest times determined by the rains. 3. Shared Experience: The cycle of seasons and the waiting for rain is a shared experience across the diverse population, binding people through common concerns about water security, food production, and economic well-being.
Question 10

Describe the characteristics and distribution of Tropical Evergreen Rainforests in India.

Answer:
Characteristics: These forests thrive in hot and humid conditions with over 200 cm of annual rainfall and temperatures around 27°C. The trees are evergreen, broadleaf hardwoods that do not shed their leaves simultaneously, making the forest appear green year-round. Trees grow very tall and form a canopy. Important trees include rosewood, ebony, and mahogany. Distribution: They are found on the windward slopes of the Western Ghats (Kerala, Karnataka, Maharashtra), the northeastern hills (Meghalaya, Assam, Nagaland), and the Andaman and Nicobar Islands.
Question 11

What are the main characteristics of Tropical Moist Deciduous Forests and where are they found?

Answer:
Also known as Monsoon Forests, these are the most widespread forests in India. Characteristics: They grow in areas with moderate rainfall (100-200 cm) and mean temperatures of 25°C-27°C. The trees are broadleaf deciduous hardwoods that shed their leaves during the dry season to conserve water. Commercially important trees like Teak and Sal are found here, along with sandalwood, bamboo, and mango. Distribution: They cover the eastern slopes of the Western Ghats, the northeastern Deccan Plateau, the Siwaliks, and the Chota Nagpur Plateau (Odisha, Bihar, Jharkhand, Madhya Pradesh).
Question 12

Describe the vegetation found in the Mountain Forests of the Himalayas at different altitudes.

Answer:
Vegetation in the Himalayas changes with altitude due to dropping temperatures: 1. 1,000-2,000 m: In the East, tropical deciduous trees (Sal) and evergreens (Bamboo) grow. In the West, mixed temperate forests with broad-leaved trees like oak and chestnut are found. 2. 2,000-3,000 m: This zone is dominated by coniferous trees such as pine (chir pine), deodar, silver fir, and spruce. 3. 3,000-5,000 m: Vegetation becomes sparse, consisting of rhododendron thickets and shrubs. 4. Beyond 5,000 m: Above the tree line, only mountain grasslands, lichens, and mosses grow until the permanent snowline is reached.
Question 13

Explain the adaptations of plants found in Tropical Thorn Forests and Desert Vegetation.

Answer:
Plants in Tropical Thorn Forests and Deserts (rainfall < 50 cm) have adapted to survive extreme heat and water scarcity: 1. Roots: Trees like Babul and Kikar have long roots that grow deep into the soil to tap groundwater. 2. Leaves: Leaves are small, fleshy, or modified into thorns (as in cacti) to minimize water loss through transpiration and protect against grazing animals. 3. Growth: Vegetation is sparse/stunted and consists largely of thorny bushes and scrubs growing far apart. 4. Common species: Acacia (babul), date palm (khajuri), and kikar.
Question 14

Describe the Tidal or Mangrove Forests and their ecological importance.

Answer:
Tidal or Mangrove forests are found in coastal deltas prone to tidal submersion, such as the Ganga-Brahmaputra delta (Sundarbans) and Mahanadi delta. Characteristics: Trees like the Sundari have specialized breathing roots called 'pneumatophores' that grow upwards to obtain oxygen from the air since the soil is waterlogged and salty. Ecological Importance: 1. Coastal Protection: They prevent coastal erosion by binding the soil with their tangled root systems. 2. Biodiversity: They provide a habitat for unique wildlife, including the Royal Bengal Tiger and aquatic life like crocodiles. 3. Economic use: The wood (e.g., Sundari, Casuarina) is hard, durable, and used for boat building.
Question 15

What are the major uses of forests in India?

Answer:
Forests are vital resources with multiple uses: 1. Climate Control: They cool the atmosphere by releasing water vapour and help induce rainfall. 2. Soil Conservation: Roots bind the soil, preventing erosion. 3. Economic Products: They provide timber (Teak, Sal) for construction and furniture, softwoods (Pine) for paper and pulp, and minor produce like resins, gums, honey, and medicinal herbs. 4. Habitat: They serve as homes for diverse wildlife. 5. Livelihood: Tribal communities depend on forest produce for their survival. 6. Industry: Specific woods are used for tanning (Kikar bark), boat building (Sundari), and perfumes (Sandalwood).
Question 16

Discuss the various threats to forests and wildlife in India.

Answer:
The primary threat is deforestation, caused by: 1. Human Activities: Cutting trees for timber, clearing land for agriculture, road construction, and expanding settlements. 2. Forest Fires: These can destroy vast tracts of vegetation. 3. Poaching and Hunting: Wildlife is threatened by illegal hunting for skins, tusks, and horns, leading to the endangerment of species like the tiger and rhinoceros. 4. Habitat Loss: As forests shrink, animals lose their natural homes, leading to man-animal conflicts and extinction risks.
Question 17

What measures has the Government of India taken to conserve forests?

Answer:
The government has implemented several conservation measures: 1. Forest Research Institute (FRI): Established in Dehradun to research and implement schemes for healthy forest cover. 2. Afforestation: Planting trees along roads and replacing felled trees. 3. Vanamahotsava: An annual tree-planting festival in July to encourage public participation. 4. Protection: Employment of forest wardens and creation of firebreaks to control forest fires. 5. Legislation: Enactment of laws like the Wildlife (Protection) Act of 1972 to legally protect flora and fauna.
Question 18

Differentiate between a Wildlife Sanctuary and a National Park.

Answer:
1. Wildlife Sanctuary: It is a protected area where the hunting and poaching of birds and animals are strictly prohibited. However, limited human activities like the grazing of livestock and fishing may be allowed on a controlled basis. Example: Periyar Wildlife Sanctuary. 2. National Park: It provides a higher level of protection. In addition to banning hunting and poaching, human activities like grazing and fishing are also completely prohibited to preserve the natural environment entirely. Example: Corbett National Park.
Question 19

What is a Biosphere Reserve and what is its objective? Name the first one established in India.

Answer:
A Biosphere Reserve is a large, designated bio-geographical region that protects a distinct natural and cultural landscape. Objective: Its goal is to conserve biodiversity while simultaneously promoting sustainable economic development that is culturally appropriate. It aims to improve the relationship between people and their environment (Man and Biosphere Programme). The first Biosphere Reserve established in India was the Nilgiri Biosphere Reserve, covering parts of Tamil Nadu, Karnataka, and Kerala.
Question 20

Write a note on Project Tiger and its purpose.

Answer:
Project Tiger is a wildlife conservation initiative launched by the Government of India. Purpose: It was started to protect the dwindling population of the Royal Bengal Tiger from extinction due to poaching and habitat loss. The project aims to maintain a viable population of tigers in their natural habitats by creating dedicated Tiger Reserves (like Corbett and Kanha) where human interference is minimized, ensuring the species' survival and ecological balance.
Question 21

Explain the characteristics and significance of the 'Loo' winds.

Answer:
The 'Loo' are strong, hot, and dusty winds that blow during the day over the northern and northwestern parts of India. Characteristics: They typically occur in the Summer season (May-June), blowing from the arid Thar Desert region towards the Northern Plains. Significance: They cause temperatures to rise sharply, often leading to heatwaves. Exposure to these winds can be fatal. They are a defining feature of the harsh summer climate in North India.
Question 22

Why is agriculture in India often described as a 'gamble on the monsoons'?

Answer:
Indian agriculture is heavily dependent on the Southwest Monsoon rains because a large part of the arable land lacks irrigation facilities. The monsoon is characterized by uncertainties: 1. Irregularity: It may arrive late or retreat early. 2. Distribution: Rainfall may be uneven; some areas flood while others face drought. 3. Breaks: Long dry spells ('breaks') during the monsoon can wither crops. If the monsoon fails or is poor, crop production drops, affecting farmers' livelihoods and the national economy. Hence, it is considered a gamble.
Question 23

Describe the wildlife found in the Tropical Evergreen Rainforests of India.

Answer:
The dense and humid Tropical Evergreen Rainforests support a rich variety of wildlife. Key species include: 1. Mammals: The Lion-tailed macaque (endemic to Western Ghats), Indian elephant, red giant flying squirrel, hoolock gibbon, and Nilgiri tahr. 2. Birds: Great Indian hornbill and Nicobar pigeon. 3. Reptiles: Green sea turtle and various snakes. 4. Others: The Greater one-horned rhinoceros is found in the wet forests of Assam.
Question 24

What is the Chipko Movement and what values does it teach?

Answer:
The Chipko Movement was a non-violent environmental movement that started in the 1970s in the Garhwal Himalayas. The name 'Chipko' comes from the word 'embrace', as villagers, led by activists like Sunderlal Bahuguna, hugged trees to prevent loggers from cutting them down. Values: It teaches the value of non-violent resistance (Satyagraha), the importance of community participation in conservation, and the deep respect for nature and forests as sources of life and livelihood.
Question 25

Compare the climate of Thiruvananthapuram and Delhi based on their location.

Answer:
Thiruvananthapuram: Located near the sea and closer to the Equator in the south. It has an equable climate with low annual range of temperature (not very hot in summer, not cold in winter) and high humidity. It receives heavy rainfall from the monsoons. Delhi: Located in the interior of the Northern Plains, far from the sea (continental location) and north of the Tropic of Cancer. It experiences an extreme climate with very hot summers (over 45°C) and very cold winters. It has a higher annual range of temperature compared to Thiruvananthapuram.
Question 26

How do the Himalayas influence the rainfall pattern in India?

Answer:
The Himalayas play a critical role in India's rainfall: 1. Blocking Monsoons: They act as a high barrier that intercepts the moisture-laden Southwest Monsoon winds blowing from the Bay of Bengal. By preventing these winds from crossing into Central Asia, they force them to shed their moisture as heavy rainfall over the Northern Plains and Northeast India. 2. Deflection: They deflect the Bay of Bengal branch of the monsoon towards the west, causing it to travel up the Gangetic plain, distributing rain across Bihar, UP, and Punjab.
Question 27

What are 'Mango Showers' and 'Kalbaisakhi'?

Answer:
1. Mango Showers: These are pre-monsoon showers occurring in South India (Karnataka and Kerala) towards the end of the summer season. They are beneficial as they help in the early ripening of mangoes. 2. Kalbaisakhi (Nor'westers): These are violent thunderstorms that occur in West Bengal and neighboring states during the hot weather season (April-May). While they bring temporary relief from the heat and light rain, they can also be destructive to life and property due to strong winds.
Question 28

Explain the economic importance of the Deciduous Forest trees.

Answer:
Trees in the Deciduous Forests are commercially very valuable: 1. Teak and Sal: These are hardwoods known for their durability and resistance to termites. They are extensively used for making furniture, construction material, shipbuilding, and railway sleepers. 2. Sandalwood: Found in Karnataka and Tamil Nadu, its fragrant wood is used for carving, and its oil is used in perfumes, soaps, and cosmetics. 3. Bamboo: Used for housing, furniture, and paper pulp. 4. Minor products: Tendu leaves (for bidis), lac (resin for varnish/wax), and various medicinal herbs.
Question 29

Why do the western slopes of the Western Ghats receive more rain than the eastern slopes?

Answer:
This is due to the Orographic effect. The Western Ghats stand as a continuous high barrier perpendicular to the moisture-laden Southwest Monsoon winds (Arabian Sea branch). When these winds strike the western slopes (windward side), they are forced to rise. As the air rises, it expands, cools, and condenses, leading to heavy rainfall on the western side. By the time the winds cross the mountains and descend on the eastern slopes (leeward side), they have lost most of their moisture and become warmer, resulting in a rain-shadow region with significantly less rainfall.
Question 30

Describe the winter weather conditions in North India.

Answer:
During the Winter Season (mid-December to February): 1. Temperature: It is the Cold Weather Season. Temperatures are low, with January being the coldest month. 2. Sky: The weather is generally fine with clear skies and low humidity. 3. Winds: Cool, dry winds blow from the northeast. 4. Precipitation: While generally dry, the northwest plains receive light cyclonic rainfall from Western Disturbances, and the Himalayas experience snowfall. 5. Fog: Cold waves and foggy conditions are common, sometimes persisting for days.
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Quick Review Flashcards - Click to flip and test your knowledge!
Question
What is the broad classification of India's climate type?
Answer
India's climate is broadly classified as the tropical monsoon type.
Question
Which important line of latitude passes through the centre of India, dividing it into a tropical southern zone and a temperate northern zone?
Answer
The Tropic of Cancer.
Question
How does proximity to the sea influence the climate of coastal and peninsular India?
Answer
It makes the climate more equable, with low diurnal and seasonal ranges of temperature.
Question
During the day, the formation of low pressure over land and high pressure over the sea leads to the development of a _____.
Answer
sea breeze
Question
What phenomenon is caused at night by high pressure over land and low pressure over the sea?
Answer
A land breeze.
Question
How do the Himalayas protect India from the cold, continental air masses of Central Asia?
Answer
They stand as a tall barrier, ensuring India's winters are not too severe.
Question
Besides blocking cold winds, what other major role do the Himalayas play in India's climate?
Answer
They block the Monsoon Winds from drifting beyond India, forcing them to bring rainfall to northern and eastern India.
Question
For every 1,000 m of ascent in altitude, the temperature falls at a rate of _____.
Answer
$6^{\circ}$C
Question
What are the seasonal winds that bring life-giving rain to most parts of India called?
Answer
The Monsoon Winds.
Question
What are the four major seasons in India?
Answer
The Summer or Hot Weather Season, the Rainy or Southwest Monsoon Season, the Northeast Monsoon Season, and the Winter or Cold Weather Season.
Question
During which months does the Summer or the Hot Weather Season occur in India?
Answer
From mid-March to May.
Question
During which months does the Rainy Season or Southwest Monsoon Season occur in India?
Answer
From June to September.
Question
During which months does the Northeast Monsoon Season occur in India?
Answer
From October to mid-December.
Question
During which months does the Winter or the Cold Weather Season occur in India?
Answer
From mid-December to February.
Question
What causes the formation of a zone of high pressure above the ocean during the Indian summer?
Answer
The ocean stays relatively cool while the land heats up, resulting in higher pressure over the water.
Question
Violent thunderstorms experienced in West Bengal and its neighbouring states during the summer are known as _____ or Kalbaisakhi.
Answer
Nor'westers
Question
What name is given to the sudden local showers in South India during summer that help in the ripening of mangoes?
Answer
Mango showers.
Question
What are the hot and dry winds that blow out from the Thar Desert and cause severe dust storms in the Northern Plains called?
Answer
Loo.
Question
Which winds are drawn towards the low-pressure centre over Northwest India, crossing the Equator to become the Southwest Monsoons?
Answer
The Southeast Trade Winds.
Question
The Southwest Monsoon is _____ in nature, which means its precipitation is caused by the relief of the land (mountains).
Answer
orographic
Question
The dramatic onset of the monsoon rains after days of building heat and humidity is known as the _____ of the monsoons.
Answer
burst
Question
Short periods of heavy rain followed by long dry spells during the monsoon are known as _____ in the monsoons.
Answer
breaks
Question
The Southwest Monsoon winds split into which two branches upon reaching the Indian landmass?
Answer
The Arabian Sea Branch and the Bay of Bengal Branch.
Question
Which mountain range forces the Arabian Sea Branch of the monsoon to rise, bringing heavy rain to the windward side of Kerala and Maharashtra?
Answer
The Western Ghats.
Question
Why does the leeward side of the Western Ghats, like the interior parts of the southern peninsula, receive very little rainfall?
Answer
It lies in the rain shadow region of the Western Ghats.
Question
Why does Rajasthan receive hardly any rain from the Arabian Sea branch of the monsoon?
Answer
The Aravalli Range lies parallel to the course of these winds and is unable to obstruct them.
Question
The Bay of Bengal Branch of the monsoon first reaches which islands by the end of May?
Answer
The Andaman and Nicobar Islands.
Question
Which hills in Meghalaya force the Bay of Bengal branch winds to bring heavy rain, making it one of the wettest places on Earth?
Answer
The Khasi, Garo and Jaintia Hills.
Question
By early July, the rain-bearing winds from the Bay of Bengal branch reach which states, where they eventually merge with the Arabian Sea Branch?
Answer
Delhi, Haryana and Punjab.
Question
The season from October to mid-December, when the landmass of India cools down and high pressure forms, is known as the _____ Monsoon.
Answer
Retreating or Northeast
Question
Winds of the Northeast Monsoon absorb moisture from the Bay of Bengal and bring rain to which coastal region of India?
Answer
The Coromandel Coast (Tamil Nadu and Puducherry).
Question
During the retreat of the monsoon, low-pressure centres that form in the Bay of Bengal can develop into powerful _____, causing massive destruction.
Answer
tropical cyclones
Question
During the Cold Weather Season, which month is usually the coldest in India?
Answer
January.
Question
What type of precipitation do the upper reaches of the Himalayas experience during the winter?
Answer
Snowfall.
Question
What is the source of the light rain received by the northwestern parts of the Gangetic Plains in winter?
Answer
Cyclonic depressions called western disturbances originating in the Mediterranean region.
Question
Regions of heavy rainfall in India receive over _____ cm of rain annually.
Answer
200
Question
Which two locations mentioned in the text receive more than 400 cm of rainfall?
Answer
The Western Coast and Cherrapunji.
Question
Regions of moderate rainfall in India receive between _____ cm of rain annually.
Answer
100 to 200
Question
Regions of scanty rainfall in India receive between _____ cm of rain annually.
Answer
50 to 100
Question
Desert and semi-desert regions in India receive less than _____ cm of rain in a year.
Answer
50
Question
Name two desert or semi-desert regions in India that receive hardly any rainfall.
Answer
The Ladakh region in north India and the Thar Desert.
Question
What is the ideal annual rainfall for tropical evergreen rainforests?
Answer
More than 200 cm.
Question
What is the ideal average temperature for tropical evergreen rainforests?
Answer
About $27^{\circ}$C.
Question
Name three types of trees found in tropical evergreen rainforests.
Answer
Rosewood, ebony, and mahogany.
Question
Name three wildlife species found in India's tropical evergreen rainforests.
Answer
Lion-tailed macaque, Indian elephant, and Great Indian hornbill.
Question
Monsoon or tropical moist deciduous forests are found in areas with moderate rainfall, between _____ cm.
Answer
150-200
Question
What is the characteristic feature of trees in monsoon or tropical deciduous forests?
Answer
They are broadleaf deciduous hardwoods.
Question
Name three types of trees found in monsoon or tropical deciduous forests.
Answer
Teak, sal, and sandalwood.
Question
Name three wildlife species found in India's monsoon or tropical deciduous forests.
Answer
Indian wild dog, sloth bear, and four-horned antelope (chousingha).
Question
In the Himalayas, between 1,000-2,000 m, one can find tropical deciduous trees like _____ and evergreens like _____ and eucalyptus.
Answer
sal; pine
Question
What type of forests are found in the Western Himalayas between 2,000-3,000 m?
Answer
Mixed temperate forests with deciduous broad-leaved trees (like chestnut) and coniferous trees (like fir and pine).
Question
Mainly coniferous trees such as silver fir, chir pine, deodar, and spruce are found in mountain forests between which altitudes?
Answer
Between 2,000-3,000 m in the Eastern Himalayas and between 2,000-3,000 m (mainly coniferous) and 3,000-5,000 m (bushes and shrubs).
Question
Above 3,000-5,000 m in mountain forests, what type of vegetation is seen?
Answer
Rhododendron thickets, bushes, and shrubs.
Question
Beyond the snowline in the Himalayas, what kind of vegetation is found?
Answer
Mountain grasslands, lichens, and mosses.
Question
Name three wildlife species characteristic of mountain forests.
Answer
Snow leopard, white-bellied musk deer, and Himalayan brown bear.
Question
Tropical thorn forests are found in regions with rainfall between _____ cm.
Answer
25-100
Question
What adaptation do trees in tropical thorn forests have to reduce water loss?
Answer
They have small fleshy leaves.
Question
Name two types of trees found in tropical thorn forests.
Answer
Khejri (or Indian date palm) and acacia (such as babul).
Question
Name three wildlife species found in India's tropical thorn forests.
Answer
Camel, Indian wild ass, and great Indian bustard.
Question
Desert vegetation is found in areas with less than _____ cm of rainfall.
Answer
25